废话不多说,直接上代码,相信都能看的懂
一共两布,第一步,创建Interceptor拦截
package com.cy.example.config;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView;public class LoginInterceptor implements HandlerInterceptor { private Logger logger = LoggerFactory.getLogger(LoginInterceptor.class); public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { // TODO Auto-generated method stub } public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // TODO Auto-generated method stub } public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { // TODO Auto-generated method stub //获取session HttpSession session = request.getSession(true); logger.info("----进入登录拦截器--url:"+request.getServletPath()+"-----"); if(session.getAttribute(WebConfig.LOGIN_USER) == null){ logger.info("------跳转到login页面-----"); response.sendRedirect(request.getContextPath()+"/index"); return false; }else{ session.setAttribute(WebConfig.LOGIN_USER, session.getAttribute(WebConfig.LOGIN_USER)); return true; } }}
第二步,注册创建的拦截器
package com.cy.example.config;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;@Configurationpublic class WebConfig extends WebMvcConfigurerAdapter { public static String LOGIN_USER = "loginUser"; public WebConfig() { super(); } //因为新加了拦截器,这里需要重新设置资源地址 @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/static/**").addResourceLocations( "classpath:/static/"); registry.addResourceHandler("/templates/**").addResourceLocations( "classpath:/templates/"); super.addResourceHandlers(registry); } @Override public void configureDefaultServletHandling( DefaultServletHandlerConfigurer configurer) { configurer.enable(); } @Override public void addInterceptors(InterceptorRegistry registry) { // 拦截规则:除了login,其他都拦截判断,excludePathPatterns是排除拦截的路径,一个是登录验证地址,一个是登录页 registry.addInterceptor(newLoginInterceptor()).addPathPatterns("/**").excludePathPatterns("/index","/system/user/validate"); super.addInterceptors(registry); }}
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持VeVb武林网。
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